Silo



P. A. HAEVERS.

SILO.

APPLICATION FILED FEB. 14, I918.

1 33 1 1 95 Patented Feb. 17, 1920.

2 SHEETS-SHEET l.

P. A. HAEVERS.

SILO.

APPLICATION FILED FEB. 14, l9l8.

Patented Feb. 17,1920.

2 SHEETS-SHEET 2.

STATES PATENT OFFICE.

'PHILEBERT A. HAEV'ERS', OF GREEN BAY, WISCONSIN.

' SILO.

Specification of Letters latent.

Patented Feb. 17,1920.

Application filed February 14, 1918. Serial No. 217,108.

To all whom it may concern:

Beit known that LPHILEBERT A. HAEvnRs, a-cit-izen of the United States ofAmerlca,

residing at Green Bay, in the county of 1 Brown and State of 'Wisconsin, have invented certain newand useful Improvements in S'ilos, of which the following is a-specification, reference being had therein to the accompanying drawing.

The invention relates to silos, andparticularly-to those constructed of wood.

In-the construction of wooden-silos, the methodhitherto adopted consisted. in forming a plurality of wooden rings or. hoopsw-hichwere made up from anumber of thin strips orYlaminae of woodbent to a circle that in order to efl'ecta smoothxabutment be- After-the somewhat tQ diOuS' procedure of forming such aplurality of'hoops, they. were employed as spacers between the;inner and outer walls or sheathingsof the silo, which were nailed to the hoops. "This construction entailed the 'formation. of a dead air space: between the walls of:the si1o,-whereby rapid decay. .ofthe sheathing. took. place.

The. present invention hasifor its principal -object the. construction of silos eliminating :the disadvantages hitherto .accompanying and inherent: insilos. of known construction.

It is an object of the invention to-provi'de -a silor'dev'oid of a dead airspace and thereinstead: to provide for the free circulation of air between thepinner and outer walls thereof.

:It is also an object ofthe-invention'to -..eliminate..-waste *of' lumber whichalwayssoccurred-in the construction I of the ordinary .silo.

iA further objectaims atthe-provision of -means' for inducing circulation ofair.

It 1 isalso an obj ect. of :the invention to provide asilo which can be cheaply: and efli- --ciently constructed, requiring less time to .;sary in=thej building -of.wooden silos.

completethe same than was'hitherto necesiA pref r-red embodim t of th m nim -may freeze. extend a ove he roof 9 urertical direction illustrated in the accompanying'draw- 111g, mwhi'ch- Figure l-is .an elevation offithe silo con-,

structed according'to the invention, a portlon of the outer wall being-broken away to disclose the interior construction;

I F igJQ is an enlarged elevation of a portlon ofthe spiral spacer, the outline of the walls beingshown in dotted lines;

Fig.8 is a longitudinal section through the discharge doors of the silo, and

Fig. 4 is a section. near'the roof, disclosing .means for inducing circulation between the silo sheathings.

In the present invention the formation of ringsto act as spacers between the inner and outerwalls of the. silo is dispensed with and. instead a plurality of laminae or strips arearranged similarly as inthe construction of .hoopsl In the present case, however, no hoops are constructed but a spirally continuous strip, thus dispensing with the necessity of shaplng or cutting down the ends or strips in-order to provide a fit such as arises the constructioniof circular'ibodies or hoops.

.The. spacer in the new form can of course be completed in considerably less -tlme, .as

pieces of variable length may be employed and no. other cutting. "down or trimming is required than that-of providing straight .ends'at-the-top or; bottom of the silo, as will be readily. understood.

Referring to the drawing, 1 generally designates the. silo which is formed with an outer wall; or sheathing2 and an inner wall or sheathing-3-spaced therefrom a. distance .-.equal;to the'thickness of a spacer 4. The "latterris composed of a plurality-of strips or'laminae 150f-wood, which, as explained 'hereinbeforaare in the form of-a-spiral -curveand-extend 'from the-bottom of the silo =torthetopthereof. The silo is erected-on a base I 6. and the lowermost endthereof is closed up. by a bottom ho0p*'7. The provision-'of thaspacer 4 creates a compartment between the walls of the silo through which an. air current-may pass in a spiral path, and means is provided for inducing a draft when the danger ispresent that the contentsof the silo, in view of a possible low-temperature, A'pipe 8 is provided, which tion, projects downwardly therethrough, as indicated in Fig. 4, and terminates in an elbow 10 secured to the inside wall of the silo. An opening 12 places the pipe 8 in communication with the topmost space between the walls of the silo, so that an a1r current starting at the bottom will pass in a serpentine path between the walls of the S110 and will finally escape through the opening 12 into the pipe 10 and thence into the atmosphere.

Longitudinally of the silo, in the form of a vertical tier, a plurality of discharge doors 13 are provided for the purpose of permitting access to the interior of the silo. As s plalnly indicated in Fig. 1, each door 13 1s hinged at one side, as at 14, to the outer wall of the structure, and the other side is equipped with a latch 15 adapted to secure the door to a hook 16 provided on the outer wall of the silo. In horizontal registry with the outer door and substantially coextensive therewith, the inner door 17 is arranged, which forms the closure of an opening 18 provided in the inner wall 3 of-the-silo. The door 17 is equip ed at its outer side with an enlargement 18 constituting a handle, whereby removal and insertion of the door 17 is facilitated. At the inner side a member 19 is secured to the top, which is adapted to be supported by a pair of holders 20 secured at each side of the door to the inner wall 3.

As is clearly indicated, the upper edge of the opening 18 is beveled, thereby permitting elevating or raising of the door 17 when it is intended to remove the latter prior to effecting a discharge of the contents of the silo. The latter is also provided with a dormer 21, through which the silo is charged. The vertical tier of doors is arranged to open into the barn in connection with 'which the silo is constructed, as will be readily understood by those versed in the art.

The improved silo affords a convenient means for inducing a natural draft through the space between the walls thereof, and this is taken advantage of when, by virtue of a low prevailing temperature, the danger is present that the contents of the silo are liable to freeze. To accomplish this end the lower doors 18 are opened, whereby the warm air contained in the barn may enter the space between the walls and then rise in the predetermined path until it finally is discharged through the pipe 8 into the atmosphere. The circulation of the warm air will of course have a tendency to heat the contents of the silo and will prevent freezing thereof so as to eliminate any harmful elfects thereon.

Silos are used for varied and diverse purposes. The material to be stored is packed tightly in the silo through the dormer 21,

and is stored in such packed condition until discharge is desired. The discharge is effected by virtue of the discharge doors 13, each of which is arranged in juxtaposition, with an inner door-permitting access to the interior of the silo.

While the drawing illustrates the preferred embodiment of the invention various changes and alterations are included which fall within the scope of the invention as defined by the appended claims.

1. A silo having an inner and outer wall in spaced relation, a spiral spacer arranged between said walls, said spacer composed of a plurality of laminae, a plurality of doors adapted to establish communication between the atmosphere and the space at predetermined levels, and means for establishing continuous communication between the topmost space and the atmosphere.

2. A silo having an inner and outer wall in spaced relation, a spacer of spiral form arranged in said space, said spacer having a thickness equal to the distance between said walls and forming a continuous structure, said spacer composed of a plurality of laminae parts of various lengths, a vertical tier of doors adapted to establish communication between the space and the atmosphere at predetermined levels, and means for establishing permanent communication between the topmost portion of said space and the atmosphere.

3. A silo having an inner and outer wall in spaced relation, a spacer of spiral form arranged in said space, said spacer having a thickness equal to the distance between said walls and forming a continuous structure, said spacer composed of a plurality of laninae of spiral form and of various lengths, a vertical tier of doors adapted to establish communication between the space and the atmosphere at predetermined levels, and a plpe opening into the top of said space and being in communication with the at mosphere.

4:. The combination in a silo with its inner and outer walls, of a spiral spacing element between said walls and, extending through its height, said silo having a vertically. arranged door space and two tiers of doors in said space arranged in pairs, one of said tiers openable to give access to the interior ofthe silo, and the other tier openable to per m1t air currents to enter the spiral space between the walls formed by the spacing element, and ventilating means through the top of the silo at the upper end of said space.

5. The combination in a silo with the outer and inner spaced walls of a spiral spacing nous spiral air space, a vent pipe terminal for said space supported at the top of the silo, two tiers of doors arranged in the silo, in pairs and alined with the spiral air space, the inner tier of doors being openable to give access to the interior of the silo, and

' the outer tier of doors openable to establish communication between the atmosphere and said spiral space at any selected altitude of the silo.

In testimony whereof I hereunto affix my signature.

PHILEBERT A. HAEVERS. 

